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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Real world 6.5cm vs prc
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<blockquote data-quote="BrentM" data-source="post: 2334457" data-attributes="member: 61747"><p>I have several of both. FOR ME..... I see 250-3000 FPS difference between the 2. For example let's say you are at max book load for a 140 in both cartridges with similar barrel makes, grooves, and lengths...... the difference is pretty dang noticeable and it should be.</p><p></p><p>My 20" 4 groove proof creed will run a 135 at 2800 and its a stout load. My PRS comp barrel in 26" creed runs a 140 at 2800 because it is crazy accurate and super low sd there. My 18" x caliber 5 groove prc runs the 135 at 3000. That's a difference of 200.... Now my 22" 4 groove proof prc runs the same load etc at 3100. So take into the account a 20" PRC should settle in at 3050.... about 250 FPS. When running the heavier bullets like a 156 the PRC tends to be able to push to the 300 fps mark easier.</p></blockquote><p></p>
[QUOTE="BrentM, post: 2334457, member: 61747"] I have several of both. FOR ME..... I see 250-3000 FPS difference between the 2. For example let's say you are at max book load for a 140 in both cartridges with similar barrel makes, grooves, and lengths...... the difference is pretty dang noticeable and it should be. My 20" 4 groove proof creed will run a 135 at 2800 and its a stout load. My PRS comp barrel in 26" creed runs a 140 at 2800 because it is crazy accurate and super low sd there. My 18" x caliber 5 groove prc runs the 135 at 3000. That's a difference of 200.... Now my 22" 4 groove proof prc runs the same load etc at 3100. So take into the account a 20" PRC should settle in at 3050.... about 250 FPS. When running the heavier bullets like a 156 the PRC tends to be able to push to the 300 fps mark easier. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Real world 6.5cm vs prc
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